from flask import Flask
from flask import render_template
from flask import url_for
from flask import jsonify,request,json
from werkzeug.utils import secure_filename


app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello World'

@app.route('/user/<name>')
def username(name):
    if(name=="张三"):
        print("真是张三")
    else:
        name = "不是张三，而是" + name
    return  '<h1>hello,%s<h1>' %name

@app.route('/user')
def user():
    users = [['张三','男','重庆'],
            ['李四','女','纽约']]
    return render_template("user.html",list=users)

@app.route('/geturl')
def redirect_to_url():
    return url_for('post_show',post_id = 666)

@app.route('/getpost/<int:post_id>')
def post_show(post_id):
    return 'Post ID : %d' % post_id

@app.route('/getJson')
def getJson():
    data = {
        "name":"张三",
        "sex":"男",
        "age":20,
        "address":"xxxxx"
    }
    #将数据转换为json类型
    return jsonify(data)

#Get、POST传参
@app.route('/login',methods=['GET','POST'])
def login():
    data = "无数据"
    if request.method == 'GET':
        print("当前请求方法是GET")
        username = request.args.get("username")
        address = request.values.get("address")

        data = {
            "username":username,
            "address":address
        }
    elif request.method == 'POST':
        print("当前请求方法是POST")
        username = request.args.get("username")
        address = request.values.get("address")

        data = {
            "username": username,
            "address": address
        }
        print(data)
    print(data)
    return jsonify(data)

#传递json
@app.route('/passJson',methods=['POST'])
def passJson():
    data = json.loads(request.get_data(as_text = True))
    #业务程序
    return jsonify(data)

#文件上传
#步骤1：创建路由，创一个到静态文件的路由
@app.route('/upload/index')
def toUploadPage():
    return render_template('upload.html')
#步骤2，静态文件中有文件上传功能，点击该功能上传文件
@app.route('/upload',methods=['POST'])
def upload():
    if request.method == 'POST':
        file = request.files['file']
        print(request.files)
        #保存到本地
        file.save(secure_filename(file.filename))
        #返回数据可更改为其他业务
        return "文件上传成功！"
    else:
        return render_template('upload.html')


if __name__ == '__main__':
    app.debug = True
    app.run()
